<template>
	<div class="child2">
		<h3>子组件2</h3>
		<h4>电脑：{{ computer }}</h4>
		<h4>哥哥给的玩具：{{ toy }}</h4>
		<button @click="emitter.emit('save-computer',computer)">把电脑给父亲</button>
	</div>
</template>

<script setup lang="ts" name="Child2">
import { ref, onUnmounted } from 'vue'
import emitter from '@/utils/emitter';
// 数据
let computer = ref('联想')
let toy = ref('')

// 给emitter绑定send-toy事件  谁要数据谁绑定事件
emitter.on('send-toy', (value: any) => {
	toy.value = value
})
onUnmounted(()=>{
	emitter.off('send-toy')
})
</script>

<style scoped>
.child2 {
	margin-top: 50px;
	background-color: orange;
	padding: 10px;
	box-shadow: 0 0 10px black;
	border-radius: 10px;
}
</style>